baber/WOPTO huggingface dataset:
Patent GB-1239152-A (GB)
IPC: H05B7/00
Filed: 1969-04-22
Abstract: 1,239,152. Automatic control of plasma-arc furnaces. QUALITATS-UND EDELSTAHLKOMBINAT VEB. April 22, 1969, No.20533/69. Heading G3R. The power supplied to a plasma-arc furnace is automatically controlled by varying the supply of a diatomic gas to the furnace atmosphere in accordance with a control signal derived from the difference between the actual value of arc voltage and a desired value, the variations of the gas supply maintaining the arc voltage at the desired value. The control system may comprise a polarized relay, a transistor switching amplifier and an electromagnetically controlled or motor driven valve in the supply of diatomic gas, which may be fed to the furnace chamber or to the plasma-arc burners.
Patent GB-1256601-A (GB)
IPC: F15B13/04
Filed: 1969-01-03
Abstract: 1,256,601. Hydrostatic transmission; valves. DANFOSS A.S. 3 Jan., 1969 [9 Feb., 1968], No. 486/69. Headings F2D and F2V. Hydraulic equipment comprises a motor 7 having two passages 5, 6, 55, 56 connected to supply and discharge lines 3, 8, 50, 52 by a commutator valve 15, 28, 33 having adjustable openings to connect the lines and passages in operating positions a, e on each side of a neutral position c, the valve 15, 28, 33 being operatively connected to an adjustable throttle 12, 61, 62 through which passes fluid flowing through the motor, a second valve 11, 36, 39 in parallel with, and forming part of the commutator valve and actuable by the pressure drop across the throttle (as shown, pressure in 61, 64, 74 acting against pressure in 52, 51, 65, 66 to move the piston 36 axially). Between each operating position a, e and the neutral position c (corresponding to rotational positions of the sleeve 33) there may be braking positions b, d in which the throttle 12, 61, 62 closes the discharge line 8, 52. The throttle 12, 61, 62 may have its maximum opening adjusted by rotating a screw 30 having an eccentric pin 29 mounting a resilient ring 32 to axially move the sleeve 28 and tangs 62. In the construction shown, grooves 60 in the sleeve 33 are always subjected to supply pressure, but grooves 61 are connected to the discharge line only in positions a and e (over 3¢ degrees from neutral c).
Patent GB-1258128-A (GB)
IPC: D01F6/60
Filed: 1969-04-01
Abstract: 1,258,128. Cellular polyamide fibres. E.I. DU FONT DE NEMOURS & CO. 1 April, 1969 [5 April, 1968], No. 17117/69. Heading B5B. [Also in Division C3] Fibres formed by melt-spinning a polycarbonamide composition containing kaolinite and phenylphosphinate, e.g. at 300-335‹ C., have numerous internal voids and small surface bumps of 1-3 Ám, which are elongated in the direction of the fibre axis, and have subdued surface lustre and reduced frictional properties. If the spinning is performed using dried flake, a further increase in polymer M.W. may be catalysed by the phenylphosphinate. The polycarbonamide is prepared in the presence of (a) an aqueous dispersion of kaolinite with particle size 0À2-5 Ám, there being 0À3-17% wt. of kaolinite and (b) 0À01-0À5% wt. of phenyl phosphinic acid or a salt thereof, the percentages being based on wt. of polycarbonamide. The salt is of the acid and an alkali metal or bis-(4- aminocyclohexyl) - methane. The polycarbonamide contains units derived from (1) bis-(4- aminocyclohexyl)methane containing at least 45% wt. of the trans-trans isomer, and optionally another diamine, and (2) linear dicarboxylic acid(s) containing 9-16 C atoms, and optionally other dicarboxylic acid(s). In (1) optional diamines include hexamethylenediamine. In (2) the acid may have 9-16 C atoms, e.g. azelaic, sebacic, dodecanedioic, and hexadecanedioic; optional acids include adipic and isophthalic acids, (a) may contain an inorganic deflocculant, e.g. Na or K silicate. The kaolinite acts as a delustrant, (b) is preferably added in an aqueous solution. (b) stabilizes the composition against the thermal degradation otherwise caused by the presence of (a). The polymerization mass may contain 1 mole per cent of CH 3 COOH.
Patent GB-1258697-A (GB)
IPC: B24B5/14
Filed: 1970-05-19
Abstract: 1,258,697. Grinding. FMC CORP. 19 May, 1970 [3 June, 1969], No. 24109/70. Heading B3D. A method of forming a bevel on an article, such as a disc of silicon, comprises mounting the article in a fixed position, disposing a quantity of abrasive material on the surface to be worked, engaging the abrasive with a moving tool surface having a configuration substantially the reverse of the bevel to force the abrasive into contact with the surface of the article, and maintaining the pressure until the bevel is formed. In apparatus for carrying out the method, a tool 30 made of tool steel is mounted in the chuck 32 of a drill press and has its lower surface formed with a recess having a frusto-conical wall 34. The article, such as a silicon wafer W, is secured by wax to a support 40, and abrasive, which may be diamond lapping material, is placed as a ribbon around the periphery of the lap. The tool 30 is thus rotated and lowered to cause the abrasive to form the bevel on the wafer. A gauge having a diameter D may be used to check the size of the bevel. After the bevel has been ground, the lapping material may be wiped off the wafer with a sheet of paper, the paper burnt, and the residue collected so that the lapping material can be separated for further use.
Patent GB-1259517-A (GB)
IPC: H04R25/02
Filed: 1969-02-12
Abstract: 1,259,517. Earphones. HOSHIDENKISEIZO K.K. 12 Feb., 1969 [19 June, 1968], No. 7621/69. Heading H4J. An earphone has a cylindrical casing 1 with an axial extension of reduced diameter 1b for insertion into the ear. A coil bobbin 5 is mounted within the casing and surrounds an axially magnetized permanent magnet 8. The bobbin 5 has a radial flange 6, at the end adjacent the axial extension, terminating in a flat portion 9 on which diaphragm 7 is held by magnetic attraction assisted by annular rib 14 on the casing interior. The casing is moulded from polyethylene in two parts which snap together at 1a, 1d. An insulating plate 13 is inserted behind magnet 8 and carries conductive parts 17a, 17b to which leads from coil 11 are connected to supply leads 16. The rear of the casing assembly is filled by a sponge rubber or plastics material 15 to secure the bobbin assembly against rib 14.
Patent GB-1264188-A (GB)
IPC: F16K17/06
Filed: 1969-10-03
Abstract: 1,264,188. Valves. DOUBLE A PRODUCTS CO. No. 48819/69. Heading F2V. Relief valve comprises a valve member 42 and seat 14, the valve member being loaded by a pair of Belleville type springs 44, 46. An abutment 56 for the springs is adjustable by a differential screw device 68, 70. In a modification, the abutment is adjustable by a screwoperated wedge (160) Figs. 4-6 (not shown).
Patent GB-1264324-A (GB)
IPC: G02B23/12
Filed: 1968-04-11
Abstract: 1,264,324. Telescopes. HILGER & WATTS Ltd. April 11, 1969 [April 11, 1968J, No. 17625/68. Heading G2J. An internally illuminated telescope having an eye-piece with a displaceable eye-guard also has means to prevent the emission of light when the eye-guard is not displaced. In the embodiment shown a moulded rubber eye-guard 10 has semicircular flaps 24, 26 fixed at points 24a, 26a and when the guard is pressed the flaps swing outwards and light is transmitted. In another embodiment, Fig.3 (not shown), similar flaps (38, 40) are secured to the body by intermediate members (42, 44). A further embodiment, Fig.5 (not shown) incorporates a flexible segmented disc (60), the segments opening out when a collar (46) is moved by the guard. In a still further form, Fig. 8 (not shown), a flexible container with opaque liquid therein is provided in the light path, the liquid being squeezed out when the guard is pressed. A final embodiment, Figs. 9, 10 (not shown) incorporates a magnetic shutter.
Patent GB-1264590-A (GB)
IPC: F16H13/00
Filed: 1970-07-27
Abstract: 1,264,590. Harmonic gearing. USM CORP. 27 July, 1970 [5 Aug., 1969], No. 36265/70. Heading F2Q. In an harmonic drive mechanism, one of the surfaces of the gear members that are in contact during deflection is roughened so as to provide projections and the other surface is formed of an elastomeric material capable of being indented by the projections. As shown in Figs. 1 and 2, a flexspline 26, integral with an output shaft 28, carries teeth 30 which are forced into engagement with an elastomeric ring 36, secured to a housing 10, by an elliptoidal wave generator 20 secured to an input shaft 18. Instead of teeth 30, the flexspline 26 may be provided with knurling 32, Fig. 5, or serrations 34, Fig. 6. In a modification, a cup-shaped member 46, Fig. 3, is secured to an output shaft 44 and carries an elastomeric ring 48 for co-operating with spline teeth 50 formed on a flexspline 52 which is mounted in a fixed housing 40 by means of an elastomeric annulus 54. In another modification, an elastomeric ring 74, Fig. 8, is secured to a flexspline 70 and engages spline teeth 76 formed on the inside of a stationary housing 78. Fig. 9 shows a modification in which rollers 96, carried on arms 94 secured to a driving shaft 90, axially engage and deflect a face of a normally flat disc 100 mounted on an output shaft 106, thereby causing radial splines 102 on the disc 100 to engage an elastomeric ring 104 bonded to a housing 80. In a further modification, shown in Fig. 10, a wave generator comprises a pair of large balls 122, a pair of small balls 126, and two pairs of intermediate balls 124 located between a driving shaft 114 and a flexspline 134 secured to a casing 112. An output member 138 has a conical recess around the peripheral edge of which is secured an elastomeric ring 136 which is engaged by the flexspline 134, the contact pressure being determined by the axial position of input shaft 114.
Patent GB-1288748-A (GB)
IPC: G01K7/24
Filed: 1968-11-20
Abstract: 1288748 Liquid level indication THOMAS ELECTRONICS Ltd 18 Feb 1970 [20 Nov 1968] 55008/68 Heading G1H In a detector device, such as for detecting liquid temperature and level changes, two terminals, A, B The Fig. (not shown) are associated with the liquid, such as in a motor vehicle cooling system, and a change in temperature or level gives rise to an impedance change between the terminals and an electronic circuit, including a uni-junction transistor oscillator circuit, produces oscillations, the frequency of which changes with the impedance change between the terminals, such that for an abrupt change of the impedances there is an abrupt frequency change and this change actuates an indicator in oscillator circuit.
Patent GB-1289745-A (GB)
IPC: H01S3/038
Filed: 1970-08-20
Abstract: 1289745 Lasers CANADA DEFENCE MINISTER OF 20 Aug 1970 [29 Aug 1969] 40235/70 Heading H1C In a gas laser pumped by a discharge transverse its optical axis, a first electrode 11, Fig. 1, extends along the laser tube 10 while a plurality of second electrodes 14 extend in a direction transverse the tube, each second electrode being connected to a potential source by an individual capacitor 15. The first electrode 11 is a quarter round brass bar, adjustable by screws 12, 13, while the electrodes 14 are pins. In Fig. 3, a high D.C. potential charges each capacitor through a resistor 20. When spark gap 23 is triggered each capacitor discharges in an arc between its associated electrode 14 and an adjacent part of electrode 11. A voltmeter 22 is provided. The capacitors are of equal value. The tube 10, Fig. 1, is connected to the resonator mirror mountings by flexible seals 18 and 19.
Patent GB-1290747-A (GB)
IPC: C07C301/00
Filed: 1970-02-10
Abstract: 1290747 Photo-sensitive materials GAF CORP 10 Feb 1970 [17 Feb 1969] 6422/70 Heading G2C A photo-sensitive material for producing printing plates comprises a quinone diozide of formula:- a terpolymer containing 3 to 15% by weight of carboxylic acid groups and a solvent therefor. Specified terpolymers are methyl acrylate/styrene /acrylic acid and ethyl acrylate/p-methyl styrene/methacrylic acid though terpolymers containing maleic acid may be used. A polymer such as a styrene/isoprene copolymer, polyvinyl methyl other or poly-methyl methacrylate may be added to the material. The material may be coated in a support of Cu, Cr, Au, Pt, si wafers or glass or a bimetallic or trimetallic plate (e. g. Zn or steel/Cu/Cr, Al/Cu/Cr). The coated material may be baked at 80 C. before imagewise exposure and development; the developer preferably being an aqueous solution of an amine and a wetting agent.
Patent GB-1290817-A (GB)
IPC: F15C1/14
Filed: 1971-04-19
Abstract: 1290817 Fluid-pressure servomotor system analogue system UNITED AIRCRAFT CORP 19 April 1971 [4 May 1970] 25544/71 Headings G3H G3P A function generator which is used in association with the air inlet control of a high speed jet engine and which provides a non-linear control function in response to two input variables, namely the local Mach member (LM) and the diffuser exit Mach pressure ratio (DEM), comprises four proportional fluid amplifiers 10,12,17,16 which have their control channels fed with one or both of the two variables. The amplifers are differently biased as shown, and have their outputs connected to two further proportional amplifiers 18,20; the two outputs from the last-mentioned amplifier being connected to the interface of an hydraulic actuator (not shown).
Patent GB-1295325-A (GB)
IPC: C01G53/12
Filed: 1970-11-02
Abstract: 1295325 Leaching nickel-bearing ores SHERRITT GORDON MINES Ltd 2 Nov 1970 [23 Dec 1969] 52094/70 Heading C1A The magnesium content of nickel and cobaltbearing lateritic ores is separated from the Ni and Co values by quenching the reduction-roasted ore with ammoniacal ammonium carbonate, leaching with admission of free oxygen-bearing gas and prolonging the leaching beyond the time required for maximum extraction of Ni and Co so as to precipitate the dissolved Mg. The resultant slurry is thickened and the solution recycled as quench solution. In an embodiment, laterite ore is roasted and the resulting calcine which leaves the furnace at 1300F. is cooled to 410F.; the cooled calcine is quenched with recycle ammoniacal ammonium carbonate at 115F. to give a quench slurry at about 132F. This slurry is cooled, and optionally, a portion of the air required for the leaching is passed into the slurry. The cooled slurry is then passed to the leach vessel where it is leached at a temperature below 115F.; as the leaching is exothermic further cooling may be carried out in the leach vessel. Alternatively the quenched slurry at 132F. may be passed directly to the leach vessel, and all the cooling carried out in the leach vessel. The time spent in the leach vessel should be sufficient to obtain maximum dissolution of nickel and cobalt, and to reduce the dissolved magnesium content below 0À05 g./l. The leached slurry is then passed to a thickener where an overflow containing dissolved nickel and cobalt is obtained. A portion of this stream is mixed with fresh ammoniacal ammonium carbonate and recycled to the quench, and the remainder is sent forward as product for Ni and Co recovery. The residual slurry is sent for a second leaching and further processing.
Patent GB-1297444-A (GB)
IPC: C08G18/10
Filed: 1970-10-29
Abstract: 1297444 Laminates and labels THIOKOL CHEMICAL CORP 29 Oct 1970 [31 Dec 1969] 51590/70 Heading B5N [Also in Divisions C3 and B6] Laminates may be formed from fabrics, metals, wood, fibre and ceramics using as an adhesive a curable polymer composition essentially comprising (a) an inert organic solvent; (b) a curable blocked urethane-prepolymer; (c) a curing agent for the prepolymer and (d) a vinyl resin copolymer comprising 70 to 97 mol per cent of vinyl chloride, 3 to 20 mol per cent of vinyl esters of aliphatic carboxylic acids or C 1-6  alkyl esters of acrylic or methacrylic acid and 0 to 15 mol per cent of maleic fumaric, itaconic, crotonic, acrylic or methacrylic acid or a derivative thereof containing free carboxyl groups (see Division C3). The bonding surface of at least one of the laminate-forming sheets is coated with the composition, the solvent is evaporated, the coated surface is pressed against the opposing bonding surface and heat is applied to the sheets to unblock the blocked urethane prepolymer and to cure and thermoset it thereby adhering the sheets together. Alternatively a tape or film of the curable material may be placed between two sheets of material which are to be adhered together and a bond formed by the application of heat and pressure. A label may be formed by applying the composition to a release sheet and then laminating it to a woven or non-woven backing. The release sheet may be provided with a printed pattern which is transferred to the adhesive layer when the release sheet is stripped.
Patent GB-1301710-A (GB)
IPC: E05C17/22
Filed: 1970-12-24
Abstract: 1301710 Stay ELMBRIDGE PRODUCTION ENGS (WALTHAMSTOW) Ltd 21 Oct 1971 [24 Dec 1970] 61316/70 Heading E2F A stay comprises a bar 10 pivoted to a bracket 11 the bar 10 being slideably engaged in a slider 14 which is pivoted to a bracket 15. The slider 14 is made from plastics material, preferably nylon, and has two circular recesses 19 and 20, which engage with pins 17 and 18 on the bar 10 to hold the hinged article in either the closed or open positions. The slider 14 is preferably channel shaped, with inwardly facing flanges to form a substantially C-shaped section.
Patent GB-1307231-A (GB)
Title: Stabilisation of soap
IPC: C11D9/44
Filed: 1969-06-18
Abstract: 1307231 Stabilization of soap IMPERIAL CHEMICAL INDUSTRIES Ltd 18 June 1970 [18 June 1969] 30784/69 Heading C5D A soap is stabilized against atmospheric oxidation during storage by incorporating therein a 2,6-di-alkyl-4-alkoxy phenol. The alkyl groups are preferably C 4 -C 8  tertiary alkyl and the alkoxy is preferably C 1 -C 8  alkoxy, e.g. 2,6- di-tert.-butyl-4-methoxy phenol. This compound may be present in the soap in concentrations of 20 to 1000 parts per million by wt. A perfume may be present. A sodium soap produced from beef tallow is stabilized by the addition of 2,6-di-tert.-butyl-4-methoxy phenol dissolved in olive oil. Other soaps are sodium and potassium laurate, oleate, palmitate and stearate.
Patent GB-1307830-A (GB)
Title: Manufacture of porous metal products
IPC: B22F3/11
Filed: 1969-08-22
Abstract: 1307830 Porous metal products INTERNATIONAL NICKEL Ltd 10 Aug 1970 [22 Aug 1969] 42040/69 Addition to 1183642 Heading C7D [Also in Division H1] A metal replica of wood or wood flour is produced by so impregnating said wood or wood flour at a pressure above atmospheric with a solution of one or more thermally decomposable metal salts that the solution enters the fibres thereof, drying the impregnated material, and by a single heating in a reducing atmosphere destroying the wood (flour), decomposing the salt(s) to metal, and sintering the resultant metal to produce a coherent metal body having a porosity corresponding to the pores within the fibres as well as to the gaps between them in the starting material. The wood may be pine or balsa, and non-cellulosic constituents may be initially removed from wood flour or resinous wood, e.g. by boiling in NaOH solution; impregnation, e.g. with NiCl 2  to make a Ni body, is preferably at a pressure # 20 p.s.i.g; a porous Ni body so formed may be impregnated with Ni(OH) 2  to make an alkaline battery plate.
Patent GB-1308571-A (GB)
Title: Polyisocyanurate polymer foam
IPC: C08G18/18
Filed: 1971-04-19
Abstract: 1308571 Rigid closed cell polyisocyanurate foams NATIONAL AERONAUTICS & SPACE ADMINISTRATION 19 April 1971 [4 May 1970] 20586/71 Heading C3C Rigid closed cell polyisocyanurate foams are made by reacting together an organic polyisocyanate, a blowing agent and a polyether polyol comprising a condensation product of a polyol with propylene oxide and having grafted polyacrylonitrile branched side chains thereon. The reaction is preferably effected in the presence of a polymerization catalyst. Conventional additives such as dispersing agents, cell stabilizers, char stabilizers, surfactants, flame retardants, fillers and polymers, may also be included in the mix. Specified polyisocyanates are polyphenyl polymethylene polyisocyanate, diphenylmethane diisocyanate, and triphenylmethane triisocyanate. The preferred graft polymer is a glycerinepropylene oxide polymer which has polyacrylonitrile side chains grafted thereon. Typical blowing agents are fluorotrichloromethane, dichlorodifluoromethane, monochlorotrifluoromethane and dichlorotetrafluoroethane. Suitable catalysts are 2,4,6 - tri(dimethylamine methyl) phenol, N-methyl morpholine, and sodium or potassium benzoate. The surfactant may be a siloxane-oxalkylene block copolymer, the char stabilizer potassium fluoroborate, the filler fibrous silica, and a filler-type polymer a terpolymer of vinyl chloride, vinyl acetate and maleic anhydride.
Patent GB-1313180-A (GB)
Title: Surface active liquids
IPC: C11D3/40
Filed: 1970-09-23
Abstract: 1313180 Liquid detergents containing a pH indicator UNILEVER Ltd 22 Sept 1971 [23 Sept 1970] 45293/70 Heading C5D [Also in Division D1] A liquid aqueous detergent composition of pH below 6À5 for addition to water comprises a pH indicator in acid form whose colour changes at a pH less than 6À5. When the liquid is added to water, a colour change occurs and hence the user can monitor the content of liquid in the water. The liquid has an acid pH especially pH 2À0 to pH 5À0 obtained by the addition of organic or inorganic acids. An acid-stable dye may be present in order to support or modify the colour of the pH indicator. The liquid may be a hand dishwashing liquid, a foam bath liquid ora fabric rinse conditioner liquid. The compositions may also contain anionic, nonionic, zwitterionic or cationic surfactants and conventional additives.
Patent GB-1319282-A (GB)
Title: Hot dip galvanizing
IPC: C23C2/00
Filed: 1970-06-10
Abstract: 1319282 Hot-dip galvanizing KUEI FAN YU 10 June 1970 28100/70 Heading C7F In a method of hot-dip galvanizing, a stream of non-oxidising or substantially non-oxidizing gas is delivered from a gas outlet 4 into a region immediately above the surface of the bath 5 and is withdrawn by suction from said region; this prevents oxidation of the zinc. The protective gas may be flue gas, and may be removed by suction at 6 and vented at 7 as shown, or may be partially or wholly recycled. Apparatus for the process comprises a vessel for holding molten zinc 5 and having an open top, an input duct 4 for gas and a suction duct 6; a gas supply 1 and meter 2, supply fan 3 and venting or recycling fan 7.
Patent GB-1327094-A (GB)
Title: Method of cleaning
IPC: C11D7/06
Filed: 1970-06-15
Abstract: 1327094 Vehicle cleaning compositions DIVERSEY DEVELOPMENT Ltd 9 June 1971 [15 June 1970] 28928/70 Heading C5D A liquid concentrate for cleaning vehicle bodies consists substantially completely of (a) up to 19 weight per cent of an alkali metal salt of an aminocarboxylic acid chelating agent, (b) up to 11.75 weight per cent of an alkali metal hydroxide, (c) water and optionally (d) a surface active agent. The invention also comprises dilute solutions of such concentrates. The chelating agent may be tetrasodium or tetrapotassium EDTA salt, a pentaalkali metal salt of diethylene triamine pentacetic acid or a trialkali metal salt of monohydroxyethyl ethylene diamine triacetic acid. The alkali metal hydroxide may be NaOH or KoH. The surface active agent may be a non-ionic.
Patent GB-1334867-A (GB)
Title: Turnbuckles
IPC: F16B7/06
Filed: 1970-11-26
Abstract: 1334867 Rod couplings TALLINSKAYA BOLNITSA TYNISMYAE 26 Nov 1970 56839/70 Heading F2G A coupling 1 for joining rods 2, 3 has a bore with threaded ends of opposite direction and a smooth central section 4, the rods being shaped so that they do not rotate relative to each other and on rotation of the coupling 1 they are drawn together. As shown, the ends 2A, 3A each rod 2, 3 are reduced to approximately semicircular cross-section and the ends of the rods 2A, 3A not threaded so that they force fit with the section 4 on assembly. Sections 5 of the threaded part of each rod 2, 3 is of reduced cross-section so that by wedging with the smooth end of the other rod each section force fits with its respective threaded part of the coupling 1.